EZ Swap LLC services the Mercury Mariner in Phoenix, AZ, covering model years 2005 to 2012. If your Mariner has a warning light, a strange noise or a safety recall question, our mechanics can diagnose it and give you a clear quote first.
To help Mariner owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 1,512 owner complaints on file for the Mariner and 7 safety recall campaigns. The most-reported problem areas are steering (598), power train (258), engine (211).
Most-Reported Mercury Mariner Problems
These problem areas come up most often in NHTSA owner complaints for the Mariner (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Steering | 598 | 39% | |
| Power Train | 258 | 17% | |
| Engine | 211 | 13% | |
| Vehicle Speed Control | 199 | 13% | |
| Electrical System | 145 | 9% | |
| Fuel/Propulsion System | 134 | 8% | |
| Service Brakes | 102 | 6% | |
| Engine And Engine Cooling | 50 | 3% |
Steering
598 of the 1,512 complaints (39%) mention steering. Steering complaints deserve prompt attention. We inspect steering components and alignment so the car tracks straight and responds predictably. See our suspension & alignment page.
Power Train
258 of the 1,512 complaints (17%) mention the powertrain. Powertrain complaints can range from rough shifting to loss of drive. We road test, scan for stored codes and inspect fluids before recommending any repair. See our auto repair page.
Engine
211 of the 1,512 complaints (13%) mention the engine and cooling system. Engine and cooling complaints are best caught early in Phoenix, where heat pushes cooling systems and engine oil to their limits. We diagnose warning lights and check coolant, hoses and oil condition. See our check engine light diagnostics and oil change & maintenance pages.
Mercury Mariner Complaints by Model Year
The Mariner model years with the most NHTSA complaints on file are 2008, 2009, 2010. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2005 | 67 | |
| 2006 | 101 | |
| 2007 | 64 | |
| 2008 | 577 | |
| 2009 | 336 | |
| 2010 | 279 | |
| 2011 | 87 | |
| 2012 | 1 |
Most Common Mercury Mariner Check Engine Codes
Owners often put the exact trouble code in their NHTSA complaint. These are the codes cited most often for the Mariner. The most-cited is P2111 (throttle actuator control stuck open), mentioned in 19 complaints. Counts reflect complaints that name a code, not every car on the road.
| Code | What it means | Complaints citing it |
|---|---|---|
| P2111 | Throttle actuator control stuck open Dirty or failing electronic throttle body; can cause stalling or reduced power. | 19 |
| P2112 | Throttle actuator control stuck closed Dirty or failing electronic throttle body; can cause stalling or reduced power. | 13 |
| B2278 | Manufacturer-specific body code The meaning of this code varies by make and model, so it needs to be looked up for your vehicle and tested. | 7 |
| B1342 | Manufacturer-specific body code The meaning of this code varies by make and model, so it needs to be looked up for your vehicle and tested. | 4 |
| B2277 | Manufacturer-specific body code The meaning of this code varies by make and model, so it needs to be looked up for your vehicle and tested. | 2 |
| P2119 | Powertrain code A scan and test is needed to confirm what this code means for your vehicle. | 2 |
| C1480 | Manufacturer-specific chassis code The meaning of this code varies by make and model, so it needs to be looked up for your vehicle and tested. | 2 |
| C1478 | Manufacturer-specific chassis code The meaning of this code varies by make and model, so it needs to be looked up for your vehicle and tested. | 2 |
A code is a clue, not a diagnosis. The same code can have several causes, so we test before replacing parts. See our check engine light diagnostics, and read whether it is safe to drive with the check engine light on.
Mercury Mariner Safety Recalls
NHTSA lists 7 recall campaigns for the Mariner in these model years, most often involving suspension, power train, seats. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2016 recall, Fuel System, Gasoline (campaign 16V777000): Ford Motor Company (Ford) is recalling certain model year 2010-2012 Ford Escape vehicles manufactured February 26, 2009, to April 29, 2012, and 2010-2011 Mercury Mariner vehicles manufactured February 25, 2009, to December 12, 2010.
- 2015 recall, Suspension (campaign 15E045000): The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and...
- 2015 recall, Power Train (campaign 15V606000): Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009.
- 2014 recall, Hybrid Propulsion System (campaign 14V526000): Ford Motor Company (Ford) is recalling certain model year 2005-2008 Ford Escape hybrid electric vehicles manufactured October 13, 2003, to June 20, 2008, and 2006-2008 Mercury Mariner hybrid electric vehicles manufactured June 10, 2005, to...
- 2014 recall, Steering (campaign 14V284000): Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010.
- 2006 recall, Seats (campaign 06V111000): CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITHOUT SIDE AIR CURTAINS OR MOONROOFS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO.
Serious Incident Reports
Of the NHTSA complaints on file for the Mariner, 44 involved a crash, 3 involved a fire, 38 reported injuries. These numbers are drawn from self-reported complaints and are not verified findings. If your vehicle has an open recall, get it repaired promptly.
Keeping a Mercury Mariner Reliable in Phoenix
Arizona heat is the hardest test a Mercury will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a Mariner that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for Mariner owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Mercury Mariner, a pre-purchase inspection shows what the paperwork does not.
Mercury Mariner Services at EZ Swap LLC
Get the details on our Phoenix Mercury Mariner repair service, or choose a service below.
Suspension & Alignment
Shocks, struts, alignment and steering.
Details →Auto Repair
All makes and models, from domestic trucks to imports.
Details →Check Engine Light Diagnostics
Scan, test and pinpoint the real cause.
Details →Oil Change & Maintenance
Oil, filters, fluids, tires and scheduled service.
Details →Car A/C Repair
Phoenix heat demands cold air.
Details →Mercury Mariner FAQ
What are the most common problems with the Mercury Mariner?
Based on NHTSA owner complaints, the most-reported problem areas for the Mercury Mariner are steering (598), power train (258), engine (211). Complaint counts reflect reports filed, not the share of vehicles affected.
Which Mariner model years have the most complaints?
The Mariner model years with the most NHTSA complaints on file are 2008, 2009, 2010. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What are the most common check engine codes on the Mercury Mariner?
In NHTSA owner complaints for the Mercury Mariner, the codes cited most often are P2111 (throttle actuator control stuck open), P2112 (throttle actuator control stuck closed), B2278 (manufacturer-specific body code). A code points to a system, and testing confirms the actual failed part.
Does the Mercury Mariner have any safety recalls?
NHTSA lists 7 recall campaigns for the Mercury Mariner across model years 2005 to 2012. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Mercury Mariner in Phoenix?
Yes. EZ Swap LLC repairs and maintains Mercury vehicles including the Mariner, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Mercury Mariner?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Mercury Mariner in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Mercury Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.